What term is used to describe the action of stealing someone’s identity?

The term used to describe the action of stealing someone’s identity is "Identity Theft." This phrase specifically refers to the illegal act of obtaining and using someone else's personal information, such as their Social Security number, bank account details, or credit card information, without their permission. The intent behind identity theft is usually to commit fraud or other crimes, as the perpetrator may take on the victim's identity to access financial resources or establish credit in the victim's name.

In this context, "Identity Theft" is the most widely recognized and legally defined term, making it the correct choice. It encompasses a range of activities that fall under the broader category of identity crimes, capturing the essential element of the unlawful appropriation of another person's identity for dishonest purposes. Other terms that mention various aspects of identity-related crimes may not reflect the specific legal understanding of the theft of personal information encapsulated by "Identity Theft."